FR2959782A1 - Jack for fluid circuit e.g. fuel circuit such as oil circuit, in turboshaft engine e.g. turbojet of airplane, has dampening chamber mounted between two elastic bodies opposite to displacement of dampening piston - Google Patents

Jack for fluid circuit e.g. fuel circuit such as oil circuit, in turboshaft engine e.g. turbojet of airplane, has dampening chamber mounted between two elastic bodies opposite to displacement of dampening piston Download PDF

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Publication number
FR2959782A1
FR2959782A1 FR1053633A FR1053633A FR2959782A1 FR 2959782 A1 FR2959782 A1 FR 2959782A1 FR 1053633 A FR1053633 A FR 1053633A FR 1053633 A FR1053633 A FR 1053633A FR 2959782 A1 FR2959782 A1 FR 2959782A1
Authority
FR
France
Prior art keywords
dampening
circuit
piston
displacement
jack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR1053633A
Other languages
French (fr)
Other versions
FR2959782B1 (en
Inventor
Alain Francois Jean Lavie
Jose Roland Rodrigues
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SNECMA SAS filed Critical SNECMA SAS
Priority to FR1053633A priority Critical patent/FR2959782B1/en
Publication of FR2959782A1 publication Critical patent/FR2959782A1/en
Application granted granted Critical
Publication of FR2959782B1 publication Critical patent/FR2959782B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/22—Fuel supply systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/54—Nozzles having means for reversing jet thrust
    • F02K1/76—Control or regulation of thrust reversers
    • F02K1/763—Control or regulation of thrust reversers with actuating systems or actuating devices; Arrangement of actuators for thrust reversers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Actuator (AREA)

Abstract

The jack (1) has a piston (3) assembled slidingly in a cylinder (2). A dampening chamber (13) is connected with the cylinder. The dampening chamber contains a dampening piston (19) for dampening oscillations of pressure, and is mounted between two elastic bodies i.e. springs, (21) opposite to displacement of the dampening piston. The dampening chamber comprises two abutments limiting displacement of the dampening piston. An annular groove is formed in a wall of the dampening chamber. Side walls of the annular groove form the abutments. An independent claim is also included for a turboshaft engine.
FR1053633A 2010-05-10 2010-05-10 CYLINDER FOR A FLUID CIRCUIT, SUCH FOR EXAMPLE OF A FUEL CIRCUIT IN A TURBOMACHINE Active FR2959782B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1053633A FR2959782B1 (en) 2010-05-10 2010-05-10 CYLINDER FOR A FLUID CIRCUIT, SUCH FOR EXAMPLE OF A FUEL CIRCUIT IN A TURBOMACHINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1053633A FR2959782B1 (en) 2010-05-10 2010-05-10 CYLINDER FOR A FLUID CIRCUIT, SUCH FOR EXAMPLE OF A FUEL CIRCUIT IN A TURBOMACHINE

Publications (2)

Publication Number Publication Date
FR2959782A1 true FR2959782A1 (en) 2011-11-11
FR2959782B1 FR2959782B1 (en) 2013-03-29

Family

ID=43332734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1053633A Active FR2959782B1 (en) 2010-05-10 2010-05-10 CYLINDER FOR A FLUID CIRCUIT, SUCH FOR EXAMPLE OF A FUEL CIRCUIT IN A TURBOMACHINE

Country Status (1)

Country Link
FR (1) FR2959782B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3057019A1 (en) * 2016-09-30 2018-04-06 Safran Aircraft Engines HYDRAULIC ACTUATOR FOR TURBOMACHINE, COMPRISING A COOLING LINE SUPPLIED IN DERIVATION OF A CONTROL VALVE
US10266273B2 (en) 2013-07-26 2019-04-23 Mra Systems, Llc Aircraft engine pylon
EP3473867A1 (en) * 2017-08-29 2019-04-24 Hamilton Sundstrand Corporation Actuator cooling flow limiter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108518494B (en) * 2018-06-01 2020-01-31 上海明通实业发展(集团)有限公司 piston type flow control valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482792A (en) * 1944-05-27 1949-09-27 Nasser D Owen Single-line hydraulic system
US3893377A (en) * 1972-10-17 1975-07-08 Philips Corp Hydraulic servomotor
DE3530800A1 (en) * 1985-08-29 1987-03-05 Wanke Wilhelm Dipl Ing Fh Pressure-cylinder system for admission of pressure medium to the piston on both sides, with a damping device for external, preferably vibration-like disturbance forces of high frequency
EP1085249A2 (en) * 1999-09-15 2001-03-21 Automotive Products France S.A. Hydraulic damper
US20090146351A1 (en) * 2007-12-10 2009-06-11 Enidine, Inc. Load compensating hydraulic rate control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482792A (en) * 1944-05-27 1949-09-27 Nasser D Owen Single-line hydraulic system
US3893377A (en) * 1972-10-17 1975-07-08 Philips Corp Hydraulic servomotor
DE3530800A1 (en) * 1985-08-29 1987-03-05 Wanke Wilhelm Dipl Ing Fh Pressure-cylinder system for admission of pressure medium to the piston on both sides, with a damping device for external, preferably vibration-like disturbance forces of high frequency
EP1085249A2 (en) * 1999-09-15 2001-03-21 Automotive Products France S.A. Hydraulic damper
US20090146351A1 (en) * 2007-12-10 2009-06-11 Enidine, Inc. Load compensating hydraulic rate control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10266273B2 (en) 2013-07-26 2019-04-23 Mra Systems, Llc Aircraft engine pylon
FR3057019A1 (en) * 2016-09-30 2018-04-06 Safran Aircraft Engines HYDRAULIC ACTUATOR FOR TURBOMACHINE, COMPRISING A COOLING LINE SUPPLIED IN DERIVATION OF A CONTROL VALVE
EP3473867A1 (en) * 2017-08-29 2019-04-24 Hamilton Sundstrand Corporation Actuator cooling flow limiter
US10502245B2 (en) 2017-08-29 2019-12-10 Hamilton Sundstrand Corporation Actuator cooling flow limiter

Also Published As

Publication number Publication date
FR2959782B1 (en) 2013-03-29

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